What if I can’t use a pesticide on campus?

If you can’t or don’t want to use harsh chemicals to kill weeds, think about green alternatives. Try Vinegar Weed Killer.
Here’s the info:
http://www.checnet.org/healthehouse/education/articles-detail.asp?Main_I D=449
If you just “Google” the words: vinegar weed killer – a ton of sites will pop up.